import timeit

def run():
    s1='''
    for i in xrange(1,1000):
        for j in xrange(1,1000):
            r1 = i * j
            r2 = i + j
    '''
    s2='''
        pass
    '''

    t1 = timeit.Timer(stmt=s1)
    t2 = timeit.Timer(stmt=s2)

    times = 5
    r1 = t1.timeit(times)
    r2 = t2.timeit(times)

    return times / (r1 - r2)  * 2